The No. 1 standby signal may be issued on Tuesday by the Hong Kong weather watchdog because of the approaching Tropical Cyclone Yagi which is anticipated to enter within 800km (500 miles) of the city.
“Whether a higher Tropical Cyclone Warning Signal to be issued depends on the intensity, circulation size of Yagi and its distance from Hong Kong,” the weather forecaster said on Monday.
The Observatory said it would consider issuing the signal between Tuesday afternoon and night.
It was reported that Yagi was centred about 190km east of Manila as of 10 am and was expected to move north-northwest at about 18km/h (11mph) towards the vicinity of the northern part of Luzon.
It is set to edge closer to the coast of southern China after entering within 800km of Hong Kong on Tuesday.
The forecaster said Yagi had “a higher chance” to move towards the vicinity of the western part of Guangdong and Hainan Island and further intensify.
According to the storm tracker, Yagi will become a typhoon on Thursday, before further strengthening to a severe typhoon and entering within 400km of the city on Friday.
The weather over the coast of Guangdong will deteriorate in the latter part of the week with winds strengthening.
There will be heavy squally showers and swells, with the temperature set to be between 27°C and 32°C.
The weather on Monday and Tuesday will be generally fair, with the maximum temperature reaching from 33°C to 34°C during the day in urban areas. The mercury is expected to be a couple of degrees higher in the New Territories.
There will be a few showers and isolated thunderstorms.
熱帶氣旋八木逼近 香港週二或發出一號待命訊號
由於熱帶氣旋八木即將進入香港 800 公里(500 英里）範圍內，香港氣象監管機構可能在週二發布 1 號待命訊號。
氣象預報員週一表示：“是否發出更高的熱帶氣旋警告信號，取決於八木的強度、環流規模以及與香港的距離。”
天文台表示將考慮在周二下午至夜間之間發出信號。
據報道，截至上午10 點，「八木」集中在馬尼拉以東約190 公里處，預計將以約18 公里/小時（11 英里/小時）的速度向西北偏北方向移動，向呂宋島北部附近移動。
週二進入香港800公里範圍內後，它將逐漸靠近中國南部海岸。
預報員表示，八木有「更大的機會」向廣東西部和海南島附近移動，並進一步加強。
據風暴追蹤系統稱，「八木」將於週四成為颱風，然後進一步增強為強颱風，並於週五進入市區400公里範圍內。
本週後半段廣東海岸天氣將轉差，風力增強。
將會有強烈狂風驟雨和海浪，氣溫將在27°C至32°C之間。
週一、週二天氣整體晴朗，市區白天最高氣溫33℃至34℃。 預計新界的氣溫將升高幾度。
將會有幾陣陣雨和局部雷陣雨。
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